Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2019	Mar. 31, 2019
Allowance for doubtful accounts receivable, net	$ 184,120	$ 51,096
Common Class B [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	38,557,643	38,464,753
Common stock, shares outstanding	38,557,643	38,464,753